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判断两条直线位置关系的依据是什么

更新时间: 2021-03-04 21:47:46     

直线:A1x+B1x+C1=0 与 A2x+B2y+C2=0

若 A1*A2+B1*B2=0,则垂直

若 A1/A2=B1/B2≠C1/C2 则平行

若 A1/A2=B1/B2=C1/C2 则重合

其他情况相交而不垂直

关键词: 判断 直线 位置 关系 依据 什么

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